The Kate effect was in effect before she married William.
Back in 2005, Kate attended a horse trial event wearing this open heart necklace in a greenish-baby blue shade.
The necklace is no longer available for purchase. Kate Middleton’s Style did a great job of archiving the company’s information on it.
“As seen on Kate Middleton, the classic Lola Rose New Medium Open Heart Pendant is a perfect gift for yourself or a loved one. You can feel special in any outfit with this pendant, as the cord can be tied at any length you choose to suit all necklines.”
The necklace is a cut-out heart pendant made of what looks to be either blue or aqua chalcedony. The heart is slightly lopsided and somewhat rounded. It’s attached to a suede cord wrapped around it at the top, near the center. There is no connector between the cord and the pendant.
It appears more blue on Kate.